8
3 cm
(1¼")
If measurements are taken successively in different samples, it is recommended
to rinse the electrode thoroughly with deionized water or tap water and
then with some of the next sample to prevent cross-contamination.
The pH reading is affected by temperature. In order to measure the pH
accurately, the temperature effect must be compensated for. To use the
Automatic Temperature Compensation feature, connect and submerse
the
HI 7662
temperature probe into the sample as close as possible to
the electrode and wait for a few seconds.
If the temperature of the sample is known, manual temperature
compensation can be used by disconnecting the temperature probe.
The display will then show the last temperature
reading with the “
ºC
” tag blinking.
The temperature can now be adjusted with the
ARROW
keys (from –20.0 ºC to 120.0 ºC).
mV/ORP MEASUREMENTS
An optional ORP electrode must be used to perform ORP measurements
(see Accessories).
Oxidation-Reduction Potential (REDOX) measurements
provide the quantification of the oxidizing or reducing
power of the tested sample.
The surface of the ORP electrode must be clean and
smooth in order to obtain an accurate measurement.
• Press
RANGE
to enter mV range.
• Submerse the tip of the ORP electrode 3 cm (1¼”) into the sample
to be tested and allow a few seconds for the reading to stabilize.
• The instrument displays the mV reading on the primary LCD and the
temperature on the secondary LCD.
• If the reading is out of range, the closest full-scale value will be
displayed blinking on the primary LCD.
41
pH BUFFER SOLUTIONS
HI 70004P
pH 4.01 Buffer Sachets, 20 mL, 25 pcs
HI 70007P
pH 7.01 Buffer Sachets, 20 mL, 25 pcs
HI 70010P
pH 10.01 Buffer Sachets, 20 mL, 25 pcs
HI 7001L
pH 1.68 Buffer Solution, 500 mL
HI 7004L
pH 4.01 Buffer Solution, 500 mL
HI 7006L
pH 6.86 Buffer Solution, 500 mL
HI 7007L
pH 7.01 Buffer Solution, 500 mL
HI 7009L
pH 9.18 Buffer Solution, 500 mL
HI 7010L
pH 10.01 Buffer Solution, 500 mL
HI 8004L
pH 4.01 Buffer Solution in FDA approved bottle, 500 mL
HI 8006L
pH 6.86 Buffer Solution in FDA approved bottle, 500 mL
HI 8007L
pH 7.01 Buffer Solution in FDA approved bottle, 500 mL
HI 8009L
pH 9.18 Buffer Solution in FDA approved bottle, 500 mL
HI 8010L
pH 10.01 Buffer Solution in FDA approved bottle, 500 mL
ELECTRODE STORAGE SOLUTIONS
HI 70300L
Storage Solution, 500 mL
HI 80300L
Storage Solution in FDA approved bottle, 500 mL
ELECTRODE CLEANING SOLUTIONS
HI 70000P
Electrode Rinse Sachets, 20 mL, 25 pcs
HI 7061L
General Cleaning Solution, 500 mL
HI 7073L
Protein Cleaning Solution, 500 mL
HI 7074L
Inorganic Cleaning Solution, 500 mL
HI 7077L
Oil & Fat Cleaning Solution, 500 mL
HI 8061L
General Cleaning Solution in FDA approved bottle, 500 mL
HI 8073L
Protein Cleaning Solution in FDA approved bottle, 500 mL
HI 8077L
Oil & Fat Cleaning Solution in FDA approved bottle, 500 mL
ELECTRODE REFILL ELECTROLYTE SOLUTIONS
HI 7071
3.5M KCl + AgCl Electrolyte, 4x30 mL, for single junction
electrodes
HI 7072
1M KNO
3
Electrolyte, 4x30 mL
HI 7082
3.5M KCl Electrolyte, 4x30 mL, for double junction electrodes
HI 8071
3.5M KCl + AgCl Electrolyte in FDA approved bottle, 4x30
mL, for single junction electrodes
HI 8072
1M KNO
3
Electrolyte in FDA approved bottle, 4x30 mL
HI 8082
3.5M KCl Electrolyte in FDA approved bottle, 4x30 mL, for
double junction electrodes
ACCESSORIES
